A TRANSCRIPTOMIC APPRECIATION OF CHILDHOOD MENINGOCOCCAL AND POLYMICROBIAL SEPSIS FROM A PRO-INFLAMMATORY AND...

Area of Science:

• Transcriptomics
• Immunology
• Pediatric Sepsis Research

Background:

• Childhood sepsis is a life-threatening condition with complex temporal dynamics.
• Understanding gene expression changes during sepsis progression is crucial for effective treatment and biomarker development.

Purpose of the Study:

• To investigate the temporal gene expression patterns in childhood sepsis.
• To identify key molecular pathways and genes involved in sepsis progression.
• To explore potential transcriptomic biomarkers for sepsis.

Main Methods:

• Analysis of five gene expression datasets (meningococcal sepsis shock and polymicrobial sepsis).
• Utilized hierarchical clustering and principal component analysis for temporal phase identification.
• Differential gene expression analysis and pathway enrichment analysis.

Main Results:

• Identified three temporal phases of sepsis: early, intermediate, and late.
• Consistently found upregulation of vascular endothelial growth factor A (VEGF-A) and nuclear factor κB1 (NFKB1) across sepsis types.
• Observed specific temporal changes in NFKB1 and differential VEGF-A/VEGF-B expression in meningococcal sepsis shock.
• VEGF signaling pathway enrichment was confirmed in sepsis datasets, with higher VEGF-A in renal tissue.

Conclusions:

• Childhood sepsis exhibits distinct transcriptomic temporal dynamics.
• VEGF-A and NFKB1 are consistently altered during sepsis and may serve as potential biomarkers.
• Further validation in larger studies is needed to establish these genes as reliable sepsis biomarkers.